Tuning the Nonlinear Acoustic Damping of Helmholtz Resonators Used in Loudspeaker Systems

Huang J, Tian X, Feng X, Shen Y. Tuning the Nonlinear Acoustic Damping of Helmholtz Resonators Used in Loudspeaker Systems. J Audio Eng Soc. 2022;70(7/8):634-641. doi:10.17743/jaes.2022.0007

@article{Huang2022_21829,
  author = {Huang, Jie and Tian, Xing and Feng, Xuelei and Shen, Yong},
  title = {{Tuning the Nonlinear Acoustic Damping of Helmholtz Resonators Used in Loudspeaker Systems}},
  journal = {Journal of the Audio Engineering Society},
  volume = {70},
  number = {7/8},
  pages = {634--641},
  year = {2022},
  month = jul,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2022.0007},
  url = {https://doi.org/10.17743/jaes.2022.0007}
}

TY  - JOUR
TI  - Tuning the Nonlinear Acoustic Damping of Helmholtz Resonators Used in Loudspeaker Systems
AU  - Huang, Jie
AU  - Tian, Xing
AU  - Feng, Xuelei
AU  - Shen, Yong
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 70
IS  - 7/8
SP  - 634
EP  - 641
PY  - 2022
DA  - 2022/07/06
DO  - 10.17743/jaes.2022.0007
UR  - https://doi.org/10.17743/jaes.2022.0007
PB  - Audio Engineering Society
LA  - en
AB  - Helmholtz resonators are frequently used in audio devices to tune the frequency responses for better performance and listening experience. One of the key challenges in designing this type of Helmholtz resonator is the achievement of appropriate damping without using damping materials. The utilization of nonlinear acoustic damping generated by the airflow separation in Helmholtz resonators is an effective method to address this issue. In this study, loudspeaker systems coupled with Helmholtz resonators were modeled based on the equivalent circuit method (ECM), and the nonlinear damping effect of Helmholtz resonators is considered. The frequency responses of the loudspeaker systems are analyzed using the ECM model and validated experimentally. The influence of nonlinear acoustic damping is investigated. Based on the ECM model, an effective method to tune the acoustic damping of Helmholtz resonators is proposed.
ER  -